<?php
/**
 * *
 *  * ============================================================================
 *  * Created by PhpStorm.
 *  * User: Ice
 *  * 邮箱: ice@sbing.vip
 *  * 网址: https://sbing.vip
 *  * Date: 2019/9/19 下午3:21
 *  * ============================================================================.
 */

namespace app\common\controller;

use app\common\library\Auth;
use think\App;
use think\exception\HttpResponseException;
use think\exception\ValidateException;
use think\facade\Config;
use think\facade\Event;
use think\facade\Lang;
use think\Loader;
use think\Request;
use think\Response;

/**
 * API控制器基类.
 */
class Api
{
    /**
     * @var Request Request 实例
     */
    protected $request;

    /**
     * @var bool 验证失败是否抛出异常
     */
    protected $failException = false;

    /**
     * @var bool 是否批量验证
     */
    protected $batchValidate = false;

    /**
     * @var array 前置操作方法列表
     */
    protected $beforeActionList = [];

    /**
     * 无需登录的方法,同时也就不需要鉴权了.
     *
     * @var array
     */
    protected $noNeedLogin = [];

    /**
     * 无需鉴权的方法,但需要登录.
     *
     * @var array
     */
    protected $noNeedRight = [];

    /**
     * 权限Auth.
     *
     * @var Auth
     */
    protected $auth = null;

    /**
     * 默认响应输出类型,支持json/xml.
     *
     * @var string
     */
    protected $responseType = 'json';

    /**
     * 构造方法.
     *
     * @param Request $request Request 对象
     */
    public function __construct(App $app)
    {
        $this->request = is_null($app->request) ? \think\facade\Request::instance() : $app->request;

        // 控制器初始化
        $this->_initialize();

        // 前置操作方法
        if ($this->beforeActionList) {
            foreach ($this->beforeActionList as $method => $options) {
                is_numeric($method) ?
                    $this->beforeAction($options) :
                    $this->beforeAction($method, $options);
            }
        }
    }

    /**
     * 初始化操作.
     */
    protected function _initialize()
    {
        if (Config::get('fastadmin.api_cross')) {
            //是否开启跨域
            if (isset($_SERVER['HTTP_ORIGIN'])) {
                header('Access-Control-Allow-Origin: ' . $this->request->server('HTTP_ORIGIN'));
                header('Access-Control-Allow-Credentials: true');
                header('Access-Control-Max-Age: 86400');
            }
            if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
                if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD'])) {
                    header('Access-Control-Allow-Methods: GET, POST, OPTIONS');
                }
                if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS'])) {
                    header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}");
                }
                exit();
            }

        }

        //移除HTML标签
        $this->request->filter('trim,strip_tags,htmlspecialchars');

        $this->auth = app()->auth;

        $modulename = app()->http->getName();
        $controllername = strtolower($this->request->controller());
        $actionname = strtolower($this->request->action());

        // token
        $token = $this->request->server('HTTP_TOKEN', $this->request->request('token', \think\facade\Cookie::get('token')));

        $path = str_replace('.', '/', $controllername) . '/' . $actionname;
        // 设置当前请求的URI
        $this->auth->setRequestUri($path);
        // 检测是否需要验证登录
        if (!$this->auth->match($this->noNeedLogin)) {
            //初始化
            $this->auth->init($token);
            //检测是否登录
            if (!$this->auth->isLogin()) {
                $this->error(__('Please login first'), null, 401);
            }
            // 判断是否需要验证权限
            if (!$this->auth->match($this->noNeedRight)) {
                // 判断控制器和方法判断是否有对应权限
                if (!$this->auth->check($path)) {
                    $this->error(__('You have no permission'), null, 403);
                }
            }
        } else {
            // 如果有传递token才验证是否登录状态
            if ($token) {
                $this->auth->init($token);
            }
        }

        $upload = \app\common\model\Config::upload();

        // 上传信息配置后
        Event::trigger('upload_config_init', $upload);

        Config::set(array_merge(Config::get('upload'), $upload), 'upload');

        // 加载当前控制器语言包
        $this->loadlang($controllername);
    }

    /**
     * 加载语言文件.
     *
     * @param string $name
     */
    protected function loadlang($name)
    {
        Lang::load(app()->getAppPath() . '/lang/' . Lang::getLangset() . '/' . str_replace('.', '/',
                strtolower($name)) . '.php');
    }

    /**
     * 操作成功返回的数据.
     *
     * @param string $msg 提示信息
     * @param mixed $data 要返回的数据
     * @param int $code 错误码，默认为1
     * @param string $type 输出类型
     * @param array $header 发送的 Header 信息
     */
    protected function success($msg = '', $data = null, $code = 1, $type = null, array $header = [])
    {
        $this->result($msg, $data, $code, $type, $header);
    }

    /**
     * 操作失败返回的数据.
     *
     * @param string $msg 提示信息
     * @param mixed $data 要返回的数据
     * @param int $code 错误码，默认为0
     * @param string $type 输出类型
     * @param array $header 发送的 Header 信息
     */
    protected function error($msg = '', $data = null, $code = 0, $type = null, array $header = [])
    {
        $this->result($msg, $data, $code, $type, $header);
    }

    /**
     * 返回封装后的 API 数据到客户端.
     *
     * @param mixed $msg 提示信息
     * @param mixed $data 要返回的数据
     * @param int $code 错误码，默认为0
     * @param string $type 输出类型，支持json/xml/jsonp
     * @param array $header 发送的 Header 信息
     *
     * @throws HttpResponseException
     * @return void
     */
    protected function result($msg, $data = null, $code = 0, $type = null, array $header = [])
    {
        $result = [
            'code' => $code,
            'msg' => $msg,
            'time' => time(),
            'data' => $data,
        ];
        // 如果未设置类型则自动判断
        $type = $type ? $type : ($this->request->param(config('var_jsonp_handler')) ? 'jsonp' : $this->responseType);

        if (isset($header['statuscode'])) {
            $code = $header['statuscode'];
            unset($header['statuscode']);
        } else {
            //未设置状态码,根据code值判断
            $code = $code >= 1000 || $code < 200 ? 200 : $code;
        }

        $response = Response::create($result, $type, $code)->header($header);
        //halt($response);
        throw new HttpResponseException($response);
    }

    /**
     * 前置操作.
     *
     * @param string $method 前置操作方法名
     * @param array $options 调用参数 ['only'=>[...]] 或者 ['except'=>[...]]
     *
     * @return void
     */
    protected function beforeAction($method, $options = [])
    {
        if (isset($options['only'])) {
            if (is_string($options['only'])) {
                $options['only'] = explode(',', $options['only']);
            }

            if (!in_array($this->request->action(), $options['only'])) {
                return;
            }
        } elseif (isset($options['except'])) {
            if (is_string($options['except'])) {
                $options['except'] = explode(',', $options['except']);
            }

            if (in_array($this->request->action(), $options['except'])) {
                return;
            }
        }

        call_user_func([$this, $method]);
    }

    /**
     * 设置验证失败后是否抛出异常.
     *
     * @param bool $fail 是否抛出异常
     *
     * @return $this
     */
    protected function validateFailException($fail = true)
    {
        $this->failException = $fail;

        return $this;
    }

    /**
     * 验证数据.
     *
     * @param array $data 数据
     * @param string|array $validate 验证器名或者验证规则数组
     * @param array $message 提示信息
     * @param bool $batch 是否批量验证
     * @param mixed $callback 回调方法（闭包）
     *
     * @throws ValidateException
     * @return array|string|true
     */
    protected function validate($data, $validate, $message = [], $batch = false, $callback = null)
    {
        if (is_array($validate)) {
            $v = Loader::validate();
            $v->rule($validate);
        } else {
            // 支持场景
            if (strpos($validate, '.')) {
                [$validate, $scene] = explode('.', $validate);
            }

            $v = Loader::validate($validate);

            !empty($scene) && $v->scene($scene);
        }

        // 批量验证
        if ($batch || $this->batchValidate) {
            $v->batch(true);
        }
        // 设置错误信息
        if (is_array($message)) {
            $v->message($message);
        }
        // 使用回调验证
        if ($callback && is_callable($callback)) {
            call_user_func_array($callback, [$v, &$data]);
        }

        if (!$v->check($data)) {
            if ($this->failException) {
                throw new ValidateException($v->getError());
            }

            return $v->getError();
        }

        return true;
    }


    /**
     * 获取post必传参数
     * @param $key
     * @return mixed
     */
    protected function getPostParam($key)
    {
        $k = $this->request->post($key);
        if (empty($k)) {
            $this->error('参数缺少:' . $key);
        } else {
            return $k;
        }
    }

    /**
     * 验证token
     * @throws \think\exception\DbException
     */
/*    public function judge_token()
    {
        $this->model = User::get(['token' => $this->get_post_param('token')]);
        if(empty($this->model)){
            $this->error('token不合法');
        }
    }*/
}
